diff options
Diffstat (limited to 'fs/pstore/platform.c')
| -rw-r--r-- | fs/pstore/platform.c | 56 |
1 files changed, 38 insertions, 18 deletions
diff --git a/fs/pstore/platform.c b/fs/pstore/platform.c index 4ffb7ab5e39..0a9b72cdfec 100644 --- a/fs/pstore/platform.c +++ b/fs/pstore/platform.c @@ -18,6 +18,8 @@ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ +#define pr_fmt(fmt) "pstore: " fmt + #include <linux/atomic.h> #include <linux/types.h> #include <linux/errno.h> @@ -168,7 +170,7 @@ static int pstore_decompress(void *in, void *out, size_t inlen, size_t outlen) int err, ret; ret = -EIO; - err = zlib_inflateInit(&stream); + err = zlib_inflateInit2(&stream, WINDOW_BITS); if (err != Z_OK) goto error; @@ -195,22 +197,41 @@ error: static void allocate_buf_for_compression(void) { size_t size; + size_t cmpr; + + switch (psinfo->bufsize) { + /* buffer range for efivars */ + case 1000 ... 2000: + cmpr = 56; + break; + case 2001 ... 3000: + cmpr = 54; + break; + case 3001 ... 3999: + cmpr = 52; + break; + /* buffer range for nvram, erst */ + case 4000 ... 10000: + cmpr = 45; + break; + default: + cmpr = 60; + break; + } - big_oops_buf_sz = (psinfo->bufsize * 100) / 45; + big_oops_buf_sz = (psinfo->bufsize * 100) / cmpr; big_oops_buf = kmalloc(big_oops_buf_sz, GFP_KERNEL); if (big_oops_buf) { size = max(zlib_deflate_workspacesize(WINDOW_BITS, MEM_LEVEL), zlib_inflate_workspacesize()); stream.workspace = kmalloc(size, GFP_KERNEL); if (!stream.workspace) { - pr_err("pstore: No memory for compression workspace; " - "skipping compression\n"); + pr_err("No memory for compression workspace; skipping compression\n"); kfree(big_oops_buf); big_oops_buf = NULL; } } else { - pr_err("No memory for uncompressed data; " - "skipping compression\n"); + pr_err("No memory for uncompressed data; skipping compression\n"); stream.workspace = NULL; } @@ -295,10 +316,6 @@ static void pstore_dump(struct kmsg_dumper *dumper, compressed = true; total_len = zipped_len; } else { - pr_err("pstore: compression failed for Part %d" - " returned %d\n", part, zipped_len); - pr_err("pstore: Capture uncompressed" - " oops/panic report of Part %d\n", part); compressed = false; total_len = copy_kmsg_to_buffer(hsize, len); } @@ -426,8 +443,11 @@ int pstore_register(struct pstore_info *psi) pstore_get_records(0); kmsg_dump_register(&pstore_dumper); - pstore_register_console(); - pstore_register_ftrace(); + + if ((psi->flags & PSTORE_FLAGS_FRAGILE) == 0) { + pstore_register_console(); + pstore_register_ftrace(); + } if (pstore_update_ms >= 0) { pstore_timer.expires = jiffies + @@ -435,8 +455,7 @@ int pstore_register(struct pstore_info *psi) add_timer(&pstore_timer); } - pr_info("pstore: Registered %s as persistent store backend\n", - psi->name); + pr_info("Registered %s as persistent store backend\n", psi->name); return 0; } @@ -477,12 +496,13 @@ void pstore_get_records(int quiet) big_oops_buf_sz); if (unzipped_len > 0) { + kfree(buf); buf = big_oops_buf; size = unzipped_len; compressed = false; } else { - pr_err("pstore: decompression failed;" - "returned %d\n", unzipped_len); + pr_err("decompression failed;returned %d\n", + unzipped_len); compressed = true; } } @@ -503,8 +523,8 @@ out: mutex_unlock(&psi->read_mutex); if (failed) - printk(KERN_WARNING "pstore: failed to load %d record(s) from '%s'\n", - failed, psi->name); + pr_warn("failed to load %d record(s) from '%s'\n", + failed, psi->name); } static void pstore_dowork(struct work_struct *work) |